noaa-ocean-2507 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2024-04-30 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Southern Indian Ocean circulation during the late Quaternary 1992-07-01 publication doi:10.25921/tknq-zg19 noaa-ocean-2507 NCEI DSI 1200_02 NCEI DSI 1200_01 Howard, W.R. originator Howard, W.R. author Prell, W.L. originator Prell, W.L. author NOAA National Centers for Environmental Information publisher tableDigital This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoceanography. The data include parameters of paleoceanography with a geographic location of Indian Ocean. The time period coverage is from 481000 to 0 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Records of past climate and ocean circulation derived from marine sediments. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-ocean.png Paleoclimatology - Paleoceanography PNG Earth Science > Paleoclimate > Ocean/Lake Records Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > climate reconstructions|paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > climate reconstructions|paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleocean > age control earth science > paleoclimate > paleocean > population abundance earth science > paleoclimate > paleocean > physical properties earth science > paleoclimate > paleocean > lithology earth science > paleoclimate > paleocean > reconstruction earth science > paleoclimate > paleocean > oxygen isotopes earth science > paleoclimate > paleocean > carbon isotopes theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian What: Globorotalia inflata; Material: null What: notes; Material: null What: identified foraminifer; Material: null What: Neogloboquadrina pachyderma sinistral; Material: null What: Globorotalia truncatulinoides; Material: null What: identified foraminifer; Material: null What: identified foraminifer; Material: null What: Globigerina bulloides; Material: null What: Orbulina universa; Material: null What: Neogloboquadrina dutertrei; Material: null What: sea surface temperature; Material: null What: identified foraminifer; Material: null What: Globigerinoides ruber; Material: null What: delta 18O; Material: Globigerina bulloides What: weight; Material: dry sediment What: identified foraminifer; Material: null What: total radiolarians; Material: null What: identified foraminifer; Material: null What: sea surface temperature; Material: null What: calcium carbonate; Material: sediment What: foraminifer fragmentation; Material: null What: total planktic foraminifers; Material: null What: total benthic foraminifers; Material: null What: Globorotalia truncatulinoides; Material: null What: age; Material: null What: delta 13C; Material: Globigerina bulloides What: identified foraminifer; Material: null What: identified foraminifer; Material: null What: Pulleniatina obliquiloculata; Material: null What: identified foraminifer; Material: null What: identified foraminifer; Material: null What: Globigerinella siphonifera; Material: null What: identified foraminifer; Material: null What: depth; Material: null What: total foraminifers; Material: null What: total benthic foraminifers; Material: null What: Globorotalia crassaformis; Material: null What: Neogloboquadrina pachyderma dextral; Material: null What: total radiolarians; Material: null What: identified foraminifer; Material: null What: Trilobatus sacculifer; Material: null What: Globorotalia hirsuta; Material: null What: identified foraminifer; Material: null theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Ocean > Indian Ocean > E45-29 > LATITUDE -44.88 > LONGITUDE 106.52 Ocean > Indian Ocean > E49-18 > LATITUDE -46.05 > LONGITUDE 90.17 Ocean > Indian Ocean > E49-17 > LATITUDE -48.28 > LONGITUDE 90.25 Ocean > Indian Ocean > E49-21 > LATITUDE -42.18 > LONGITUDE 94.88 Ocean > Indian Ocean > E49-23 > LATITUDE -47.12 > LONGITUDE 95.08 place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Howard, W.R.; Prell, W.L. (1992-07-01): NOAA/WDS Paleoclimatology - Southern Indian Ocean circulation during the late Quaternary. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/tknq-zg19. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose otherRestrictions None otherRestrictions Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. Late Quaternary surface circulation of the southern Indian Ocean and its relationship to orbital variations 1992 publication Howard, W.R., and W.L. Prell author Paleoceanography publisher https://doi.org/10.1029/91PA02994 HTTPS Web Browser Associated Reference published 1992 Howard, W.R., and W.L. Prell, 1992: Late Quaternary surface circulation of the southern Indian Ocean and its relationship to orbital variations. Paleoceanography, 7, 79-118, 10.1029/91PA02994 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 481000 14C yr BP to 0 14C yr BP; Date Range: 481000 cal yr BP to 0 cal yr BP; 90.17 106.52 -48.28 -42.18 -479050 1950 ABSTRACT SUPPLIED BY ORIGINATOR: The paleoceanographic history of the Southern Indian Ocean is reflected by the movement of two prominent dynamical features of the Southern Ocean: the Subtropical Convergence (STC) and the Antarctic Polar Front (APF). These fronts, and their associated sea surface temperature (SST) signatures, are well delineated by planktonic foraminiferal faunas in surface sediments of the southern Indian Ocean. Using a transect of piston cores between 42°S and 48°S at about 90°E, we have reconstructed the latitudinal distribution of planktonic foraminiferal faunas over the past 500,000 years. These faunal variations imply changes in the paleolatitudes of the STC and APF and the surface isotherms associated with the fronts. Stratigraphic and chronologic control is provided by δ18O, %CaCO3, and biostratigraphy. Our reconstruction indicates that the STC has been equatorward of its present position (∼40°S) for most of the past 500,000 years and has been poleward of that position for only four relatively brief (∼10,000-year) intervals during that time. We estimate six equatorward excursions of the APF over the same period, with a maximum total range of about six degrees of latitude. The average paleo-position of the APF is about 46°S, about 4°north of its present position (∼50°S). Ice-rafted debris, another indicator of APF position, occurs as far north as 45°S during glacial intervals. Latitudinal gradients in SST show little glacial-interglacial change between 42° and 48°S, suggesting that surface isotherms were displaced uniformly or that compression of SST gradients occurred outside the transect. Time series analyses of the SST records in this transect reveal statistically significant concentrations of variance in the primary orbital frequency bands. SST variations in these bands are coherent with orbital variations and with changes in δ18O. SST in the subantarctic Indian Ocean slightly precedes changes in δ18O occurring in the eccentricity, obliquity, and precession bands, and lag orbital variations in the obliquity and precession bands. These results place important constraints on possible mechanisms of interhemispheric climatic timing. The similarities in temporal patterns and timing among Southern Ocean SST, atmospheric CO2, and relative flux of North Atlantic Deep Water implicate atmospheric carbon dioxide and deep water circulation as possible interhemispheric pacing mechanisms. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Native Format(s) https://doi.org/10.25921/tknq-zg19 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/2507 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/paleoceanography HTTPS Information NCEI Paleoceanography Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/e49-23-tab.txt HTTPS Download /paleocean/sediment_files/complete/e49-23-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/e49-21-tab.txt HTTPS Download /paleocean/sediment_files/complete/e49-21-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/e49-18-tab.txt HTTPS Download /paleocean/sediment_files/complete/e49-18-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/e49-17-tab.txt HTTPS Download /paleocean/sediment_files/complete/e49-17-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/e45-29-tab.txt HTTPS Download /paleocean/sediment_files/complete/e45-29-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/howard1992 HTTPS Download /contributions_by_author/howard1992 Original Data and Full Metadata download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21